<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>内嵌式练习</title>
<style type="text/css">
p{
width:150px;
height:40px;
background: black;
color:#fff;
}
</style>
</head>
<body>
<p>我的段落</p>
</body>
</html>
